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Conversion of a recipe |
2005-02-06 |
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Peg pose la question :
A Hungarian friend gave me an old, old family recipe and it calls for:
20 dg. sugar
15 dg. filbert
I can't find a conversion table anywhere that explains how to get ounces from "dg." Do you know what the equivalent would be in ounces of dry measurement?
Harley Weston lui répond. |
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Extraneous solutions |
2005-02-04 |
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Heather pose la question : My teacher wants to know why there are extraneous solutions in logarithms? Penny Nom lui répond. |
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A seating arrangement |
2005-02-03 |
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Kay pose la question : If you have 5 married couples, how many arrangements can be made if they must sit across from each other? Penny Nom lui répond. |
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Three debts |
2005-02-03 |
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Kat pose la question : If I have three debts and 49% percent of total debt is loaned at 9% intrest, 34% of the debt is at 21% intrest and 17% of the total debt is at 14% intrest, how do I calculate the average rate of intrest on total debt? Penny Nom lui répond. |
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Strategies for teaching operations with positive and negative decimal numbers |
2005-02-02 |
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Erin pose la question : I am wondering if you can suggest any strategies for teaching operations with positive and negative decimal numbers that do not rely on rules that must be memorized? Diane Hanson lui répond. |
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The diaonals of an isosceles trapezoid are congruent |
2005-02-02 |
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Daniel pose la question : I am currently unable to find a proof that the diaonals of an isosceles trapezoid are congruent. Might you happen to have one? Walter Whiteley lui répond. |
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Solve for x |
2005-02-02 |
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Christie pose la question : Solve for x
.387 = (.40 - .265x)/(sqrt(1-x2)) Penny Nom lui répond. |
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A line segment connecting two vertices of a polygon |
2005-02-02 |
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James pose la question : What is a line segment (not a side) connecting two vertices of a polygon called? Penny Nom lui répond. |
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The volume of an aquarium |
2005-02-01 |
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Selena pose la question : Im trying to figure out the amount of gallons from a rectangle 48x20x12? Penny Nom lui répond. |
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'zero divided by one' and 'one divided by zero' |
2005-01-31 |
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Katrina pose la question : Please advise how best to explain the distinction between the solution to 'zero divided by one' and 'one divided by zero'. I remember being told in school that one of them is undefined and the other is zero but I'm having difficulty with calculating and explaining it to some highly curious 10 year olds! Claude Tardif and Walter Whiteley lui répond. |
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Are the vetices of this quadrilateral concyclic? |
2005-01-30 |
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A student pose la question : Show that the peints A(-2,0),B(6,6),C(-1,7) and D(-2,6) are concyclic. Also find its circum radius. Chris Fisher lui répond. |
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Sum to n terms of the series i.(2^(n-i)) |
2005-01-28 |
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Satya pose la question : Sum to n terms of the series i.(2n-i) Penny Nom lui répond. |
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Some logarithm problems |
2005-01-27 |
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Jo pose la question : Given ln x=7.1; ln y=8.2, Find ln(x^3y^7) Penny Nom lui répond. |
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By how much is 100 multiplied or divided,... |
2005-01-27 |
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Benedict pose la question : By how much is 100 multiplied or divided, so that whether the number obtained is divided by 5 or 7, there will be a remainder of 1 and so that at the same time, the first quotient is greater by 4 than the second? Penny Nom lui répond. |
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Approximating an integral |
2005-01-27 |
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A student pose la question : i used excel to find the area under a graph instead of integrating the function the analytical way. These are the different answers i got with different width of the x-values, the smaller the x-increment gets the more precise the area is when compared to the answer obtained the numerical way. I have trouble seeing why the answers i get is getting bigger and bigger and not smaller can someone plz explain? Penny Nom lui répond. |
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